论文部分内容阅读
在哺乳类,妊娠中的激素分泌变化同分娩时母性行为的表达有关联。催乳素是妊娠初期和末期大量分泌的垂体激素,但对它的刺激母性行为作用知道的很少。美国哈佛医科大学的布里奇斯博士等使用经手术去除垂体的未成熟的大鼠,调查研究了母性行为表达和催乳素之间的联系。他们首先证实,在母性行为方面离不开甾体激素,但仅此还不够,还需要有垂体参与。其次知道若把垂体移植到未成熟动过手术的大鼠心包膜下,然后测定血中催乳素浓度,那么随着催乳素浓度的上升,母性行为表达跟着提早。另外,同时投与催乳素和甾体激素的大鼠同只投与甾体激素的大鼠相比,前者母性行为开始早于后者。
In mammals, hormonal changes during pregnancy are associated with maternal behavior during childbirth. Prolactin is a pituitary hormone secreted in large amounts during early and late pregnancy, but little is known about its role in maternal behavior. The United States Harvard Medical University, Dr. Bridges and other surgery to remove pituitary immature rats, investigated the relationship between maternal behavior and prolactin. They first confirmed that steroid hormones can not be separated from maternal behavior, but this is not enough, and there is a need for pituitary involvement. Second, we know that if the pituitary gland transplantation to immature surgically induced rat pericardium, and then determine the blood prolactin concentration, then as the prolactin concentration increases, followed by early expression of maternal behavior. In addition, both prolactin and steroid-administered rats started maternal behavior earlier than steroid-only rats.